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    Bug 
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    Resolution: Fixed
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     P3 P3
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    12, 13
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        b16
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build | 
|---|---|---|---|---|---|---|
| JDK-8228919 | 12u-cpu | Zhengyu Gu | P3 | Resolved | Fixed | master | 
| JDK-8222645 | 12.0.2 | Zhengyu Gu | P3 | Resolved | Fixed | b03 | 
                    Shenandoah can (will) do concurrent class unloading,  also does class unloading at pause for full gc. Therefore, UnloadingScope needs to preserve and restore IsUnloadingBehavior installed for concurrent unloading.
            
- backported by
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                    JDK-8222645 CodeCache::UnloadingScope needs to preserve and restore previous IsUnloadingBehavior -           
- Resolved
 
-         
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                    JDK-8228919 CodeCache::UnloadingScope needs to preserve and restore previous IsUnloadingBehavior -           
- Resolved
 
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